cpp/openttd-patchpack/source Changeset - r21002:46db63e452df

Changeset - r21002:46db63e452df

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rubidium - 11 years ago 2013-11-23 21:42:45
rubidium@openttd.org

(svn r26077) -Codechange: handle strings like strings when scanning a tar instead of merely blobs of memory

1 file changed with 7 insertions and 16 deletions:

src/fileio.cpp

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src/fileio.cpp

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@@ @@ -761,7 +761,7 @@ bool TarScanner::AddFile(const char *fil @@
 	TarHeader th;
 	char buf[sizeof(th.name) + 1], *end;
 	char name[sizeof(th.prefix) + 1 + sizeof(th.name) + 1];
+	char name[sizeof(th.prefix) + 1 + sizeof(th.name) + 1] = "";
 	char link[sizeof(th.linkname) + 1];
 	char dest[sizeof(th.prefix) + 1 + sizeof(th.name) + 1 + 1 + sizeof(th.linkname) + 1];
 	size_t num = 0, pos = 0;
@@ @@ -784,25 +784,17 @@ bool TarScanner::AddFile(const char *fil @@
 			return false;
+		}
 		name[0] = '\0';
 		size_t len = 0;
 		/* The prefix contains the directory-name */
 		if (th.prefix[0] != '\0') {
 			memcpy(name, th.prefix, sizeof(th.prefix));
 			name[sizeof(th.prefix)] = '\0';
 			len = strlen(name);
 			name[len] = PATHSEPCHAR;
 			len++;
 			ttd_strlcpy(name, th.prefix, lengthof(name));
 			ttd_strlcat(name, PATHSEP, lengthof(name));
+		}
 		/* Copy the name of the file in a safe way at the end of 'name' */
 		memcpy(&name[len], th.name, sizeof(th.name));
 		name[len + sizeof(th.name)] = '\0';
 		ttd_strlcat(name, th.name, lengthof(name));
 		/* Calculate the size of the file.. for some strange reason this is stored as a string */
 		memcpy(buf, th.size, sizeof(th.size));
 		buf[sizeof(th.size)] = '\0';
 		ttd_strlcpy(buf, th.size, lengthof(buf));
 		size_t skip = strtoul(buf, &end, 8);
 		switch (th.typeflag) {
@@ @@ -831,8 +823,7 @@ bool TarScanner::AddFile(const char *fil @@
 			case '1': // hard links
 			case '2': { // symbolic links
 				/* Copy the destination of the link in a safe way at the end of 'linkname' */
 				memcpy(link, th.linkname, sizeof(th.linkname));
 				link[sizeof(th.linkname)] = '\0';
 				ttd_strlcpy(link, th.linkname, lengthof(link));
 				if (strlen(name) == 0 || strlen(link) == 0) break;
@@ @@ -848,7 +839,7 @@ bool TarScanner::AddFile(const char *fil @@
 				/* Process relative path.
 				 * Note: The destination of links must not contain any directory-links. */
-				strecpy(dest, name, lastof(dest));
+				ttd_strlcpy(dest, name, lengthof(dest));
 				char *destpos = strrchr(dest, PATHSEPCHAR);
 				if (destpos == NULL) destpos = dest;
 				*destpos = '\0';

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